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Maths Puzzle
Numerical Ability
The volume of the box is represented by (x2 + 5x + 6)(x + 5). Find the polynomial that represents the area of the bottom of the box.
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2x-3y=9
-5(d+3)=7d+5 and 2/5(a+10)=1/4(a+20), these should help me with the rest of the problems. I am doing the problems so that I can check his work. Thanks.